For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Note 10 - Significant Customers (Details Textual) - Customer Concentration Risk [Member]	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue Benchmark [Member]
Number of Major Customers	0	1
Revenue Benchmark [Member] \| Customer One [Member]
Concentration Risk, Percentage		11.00%
Accounts Receivable [Member]
Number of Major Customers	1		0
Accounts Receivable [Member] \| Customer One [Member]
Concentration Risk, Percentage	12.00%